BIREFRINGENT MATERIAL
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United States of America Patent
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Issued Date -
Jun 9, 2011
app pub date -
Apr 14, 2009
filing date -
Apr 16, 2008
priority date (Note) -
Abandoned
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Abstract
An artificial birefringent element having a repeating unit comprising at least first and second layers alternatively stacked, the first and second layers being formed of materials having different refractive indices.
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